fix: allow access to project id of model

src/main/java/com/hlag/tools/commvis/analyzer/model/CommunicationModel.java

@@ -21,6 +21,7 @@ public class CommunicationModel {
     /**
      * Identifier for the current project, e.g. gitlab project id
      */
+    @Getter
     @SerializedName(value="project_id")
     private final String projectId;